悬吊TMD对高柔结构风振反应的半主动控制

Semi-Active Control for Wind Induced Vibration of Highrise Structures with Hanging TMD

通过南京电视塔这个工程实例，系统地介绍了悬吊ＴＭＤ（ＴｕｎｅｄＭａｓｓＤａｍｐｅｒ）对高柔结构脉动风振反应半主动控制的基本原理和设计计算方法。文中，在建立悬吊ＴＭＤ和结构受控响应运动方程的基础上，应用随机振动和等价线性化的方法得到了ＴＭＤ装置中环型质量ＭＴ，弹簧刚度ＫＴ和阻尼器参数ＣＴ的求取方法。同时，根据可调阻尼器所产生的半主动阻尼力应尽量接近最优主动控制力的原理，得到了可调阻尼器阀门阻尼系数的调整公式。依据上述结果，在设计了悬吊ＴＭＤ参数的基础上，对悬吊ＴＭＤ对南京电视塔的风振控制进行了计算机模拟。结果表明，悬吊ＴＭＤ对高柔电视塔风振反应的半主动控制有很好的效果，它使太空舱的风振加速度响应减小了３８％。

The basic principle and calculation method of semi-active control for wind fluctuation induced vibration of highrise structures with a hanging TMD attached systematically are presented in the paper with thehelp of the analysis of an engineering example-Naming TV Tower. On the basis of the equations of boththe respons of hanging TMD and controlled response of the structure,the calculation formulas of ring-massMT,spring stiffness KT and damping parameter CT of TMD are derived by the random vibration theory andthe equivalent linearization method. According to the principle that the semi-active damping force generatedby the tuned dampers should be equal to the optimal active control force,the tuned formula of the dampingcoeficient of the valves of the tuned dampers is obtained. A computer simulation of control for wind inducedvibration of Naming TV Tower with hanging TMD was completed by using the determined parameter ofhanging TMD. The result indicated that the semi-active control of hanging TMD for wind vibration responses of highrise structures was very effective and that it decreased the vibration acceleration of a smallsightseeing hall by 38%.